Hybrid Audio Technologies Clarus C61-2 Installation & Reference Manual

Brand: Hybrid Audio Technologies

Model: Clarus C61-2

Category: Car speakers

Type: Installation & Reference Manual

This manual is also suitable for

Clarus C6

1240 Oak Industrial Lane

Cumming Georgia 30041

United States

Clarus-Series

Component Systems

Installation & Reference Manual

(T) +1 770 888 8200

(F) +1 888 886 4605

hybrid-audio.com

Contents

Welcome & Introduction

Pages 4-5

Getting Started

Pages 18-23

Basic System Installation

Component Specic Information

Pages 6-17

Midbass, Tweeter, & Crossover

Attributes, Specications, Parameters,

and Mechanical Drawings

Warranty

Page 32-33

04 Moving Forward

Pages 24-31

Advanced System Installation,

Lessons Learned, Mounting Bafe

Considerations, and Acoustic

Treatment

Speaker development is our passion!

When installed and set-up properly,

the Clarus Component System

you have purchased will make a

remarkable improvement in the

sound quality of virtually any mobile

audio sound system and give years of

superior performance.

With the publication of this manual, it

is our goal to assist the “do it yourself”

enthusiast and professional installer

alike in getting the highest level of

performance out of Clarus Component

Systems using straight-forward

installation advice.

Thank you, and happy listening!

Welcome and Introduction

by Scott Buwalda - Founder

We realize that

you have a choice

in loudspeakers,

and are thrilled

that you have

chosen the Clarus

series component

systems. For more

information about

Hybrid Audio

Technologies,

our philosophies

regarding

high-end mobile

audio, to learn

more about

our lifetime

guaranteed value

program, and

for information

about our other

products, please

visit us at:

hybrid-audio.com

Congratulations

on your Clarus

Component

System purchase,

and welcome

to the world of

Hybrid Audio

Technologies!

Your Clarus system

contains speaker drivers

and passive crossover

networks that were

developed and assembled

with a signicant

eort in research and

development, materials

science engineering,

an exhaustive level of

sampling and prototyping,

real-world testing, and

obsessive attention to

detail. The specications

and parameters of your

Clarus component system

is detailed on these pages.

Midbass Attributes

Clarus C5 & C6

Frame

Cast aluminum with black powder-texture surface

coating. The basket is a high-quality cast aluminum

design, which plays a critical role in aligning the

voice coil in the magnetic circuit. Additionally, the

cast aluminum frame allows for better clamping

strength verses typical stamped steel frames, and

ensures that the voice coil remains centered in the

former. The black coating on the frame protects

it from abrasion and oxidation. The frames are

similar in size and format to the Mirus, Imagine, and

Clarus-series drivers, allowing for upgrade potential

from these product lines to the Clarus series.

Cone and Dust Cap

Pressed paper, untreated on the front side

and treated on the rearward side. It is widely

acknowledged that pressed paper cones are the

best marriage of lightness, stiness, and ability

of the cone to damp unwanted cone and edge

modes and resonances (read: distortion). The

damping aorded by the paper cone ensures the

midbass speakers can play lower treble frequencies

eortlessly, without signicant cone “breakup.” Our

approach to “point-source imaging” is to rely on the

midbass driver to eectively reproduce the lower

treble frequencies, where the human vocal range

extends, as well as other imaging-critical musical

instruments, ensuring phase-coherent imaging and

stable, lifelike staging character.

The paper cone, known for its excellent sonic

attributes, is water resistant, thanks to a polymer

developed exclusive and proprietarily by Hybrid

Audio Technologies. The treatment does not

change the look and parameters of the driver like

old-fashioned “glossy” polymers which added

an appreciable amount of moving mass and

signicantly colored the sound. No, the Clarus cones

look like any “normal” paper cone. The treatment

protects the cone from periodic drips (such as inside

a door panel), as well as accidental splashes to the

front of the cone.

The dustcap covers the voice coil to keep dirt and

debris from fouling the voice coil gap. Since high

frequency information emanates from the center

of the cone, a paper dustcap was utilized in concert

with the pressed paper cone diaphragm to ensure

that the speaker’s response remained linear into the

lower- to mid-treble frequencies.

Surround

Inverted high-loss rubber surround. The inverted

high-loss rubber surround (in concert with the

spider, detailed below), helps to provide the

compliance and “restorative force” needed for the

Clarus drivers to play eectively into the lower

midbass, and even upper subbass frequencies

(depending on in-car cabin gain and other factors).

You’ll also know a Hybrid Audio midrange and

midbass design by its inverted surround; this

design feature allows for the use of a smaller height

grille, better clearance with OEM panels, and more

exibility in mounting options. The surround is a

shared technology with the Imagine series coaxial

and convertible component sets.

Spider

Phenolic fabric and tinned tinsel leads. The spider

is the brownish/yellow corrugated (rippled) fabric

that attaches the cone and voice coil. The spider for

the Clarus designs was the subject of a considerable

amount of our research and development. The

spider is a phenolic symmetrically-rolled fabric

which provides excellent restorative force during

excursion, and the woven tinsel leads, often not

found in speakers in this price range, are an asset to

the Clarus line because the leads are protected from

physical damage and accidental short circuit. The

tinsel leads are connected to real epoxy PCB, not

imsy cardboard.

Voice Coil and Motor System

1” (25mm) (C5) and 1.4” (35mm) (C6): complimentary

design. The voice coil used in the Clarus midbass is

a 2-layer aluminized copper wire coils on a round

former. An “overhung” voice coil was selected to

improve sensitivity while still keeping distortion

to a minimum. The motor system utilizes a ferrite

magnet with rubber protective boot (which

can be removed to improve mounting depth),

complimented by design with a back plate and

rear venting chamber to improve the speaker’s

thermal power handling and improved ability of the

midbass to play at high amplitudes.

Continued on following page...

Clarus

Component

Systems

Your Clarus system

contains speaker drivers

and passive crossover

networks that were

developed and assembled

with a signicant

eort in research and

development, materials

science engineering,

an exhaustive level of

sampling and prototyping,

real-world testing, and

obsessive attention to

detail. The specications

and parameters of your

Clarus component system

is detailed on these pages.

Tweeter Attributes

Clarus C1

Dome

Small diameter impregnated silk textile dome

with high-loss rubber suspension. The C1 is

a shared technology with the high-end Unity

U1 tweeter, boasting has an impregnated ne

cloth silk dome diaphragm for a linear, smooth

sound, with a high-loss rubber suspension

to damp edge modes and resonances. The

dome is of extremely low mass and is much

less susceptible to mechanical deformation

than other designs, and yet yields a smooth

response over the extent of its range. At Hybrid

Audio Technologies, we feel larger diaphragm

tweeters sound heavy and unremarkable,

lack detail in the upper treble frequencies,

have undesirable polar response, and are

dicult to install. Additionally, we nd metal

dome tweeters to be harsh, brittle, and sound

unrealistic. As a small diameter, soft-dome

tweeter, the C1 is the antithesis of large

diaphragm and metal-dome tweeters, for the

eective and convincing reproduction of treble

frequencies.

Voice Coil and Motor System

20mm complimentary design. The motor

assembly is “conventional dynamic”, with a

compact neodymium magnet structure to

ensure a small footprint size and shallow

depth. A perforated grille protects the dome.

The voice coil is ferrouid cooled and damped,

and the tweeter housing consists of extruded

plastic with three dierent mounting options

in component set mode, giving the end-user

exibility in not only placement of the C1 but

also in physical installation.

Crossover Attributes

Clarus C2x

Alignment

Second order L/R (12 dB/octave) lters for low

pass (C5 or C6) and high pass (C1). The C51-2

2-way passive crossover network includes

a Clarus low pass and high pass crossover

frequency of 5,700 Hz at 12 dB/octave. The

C61-2 2-way passive crossover network includes

a Clarus low pass and high pass crossover

frequency of 5,200 Hz at 12 dB/octave. The use

of 12 dB/octave lters on both low pass and

high pass, often not found in speakers in this

price range, minimizes phase-related distortion

typical of crossovers with mismatched orders,

and ensures phase-coherent imaging and

staging. The alignment topology is a shared

technology to the high-end Unity U2x crossover

design and features asymmetrically-aligned

network components.

Network Components

Audiophile grade. The C51-2 and C61-2

passive crossover networks incorporate super

high quality and low tolerance metalized

polypropylene lm capacitors for both highpass

and low pass, in concert with air-core inductors,

and low tolerance non-inductive resistors. No

output level switches were used in the passive

crossover design because switches add a

resistive eect and are typically of extremely

low quality. Additionally, “jumper pins” add

an unnecessary pair of splices in the signal

path to the tweeter, and were not included

in our design either. Rather, all tweeter level

adjustments are done on the board level with

dedicated non-inductive resistors; tweeter

attenuation is accomplished by selecting the

appropriate output (-3 dB, 0 dB, or +3 dB)

on the passive crossover circuit board. The

components selected are complimentary and

ensure no notable signal degradation between

the input and output side of the crossovers,

and serve only to lter frequency response,

and not to equalize the input signal. The

network componentry, design, circuitry, and

polyethylene case with transparent cover are

shared technologies to the Unity series, and the

Unity U2x crossover design.

Clarus

Component

Systems

C51-2

System

C61-2

System

Midbass

Overall Diameter Φ151.3 mm Φ166 mm

Mounting Depth 55.8 mm 76 mm

Bolt Circle Diameter Φ138 mm Φ156.5mm

Mounting Hole Φ 118 mm Φ143.5 mm

Recommended Minimum Highpass

Crossover Frequency (fourth order)

60 Hz 45 Hz

Continuous Power Handling

(Pnom Rated Power Input • No crossover)

110 watts 120 watts (40 watts) (60 watts)

Peak Power Handling

(Pmax Rated Power Input • No Crossover)

230 watts 250 watts (80 watts) (120 watts)

Recommended Power Range 25-150 watts 25-175 watts

Frequency Response (+/- 3dB) 55 Hz - 22 kHz 50 Hz - 22 kHz 60 Hz - 12 kHz 50 Hz - 9 kHz

Eciency 2.83V/1 meter 92.0 dB 93.6 dB

Mms 7.1 g 14.1 g

Cms 667 μM/N 674 μM/N

BL (T*m) 3.896 5.4

Voice Coil Diameter 25.5 mm 35.5 mm

Nominal Impedance 4 Ω 4 Ω

DC Resistance 3.4 Ω 3.4 Ω

Fs (Free Air) 73 Hz 50 Hz

Qms 6.358 5.527

Qes 0.728 0.532

Qts 0.654 0.485

Xmax (Two Way) 10mm 14mm

Vas 6.1 L 14.9 L

Sd 8.012 mm212.469 mm2

Clarus

Component

Systems

Specications &

Parameters

† Typically, in-car response including vehicular “cabin gain”, or the gain expected

with midbass installed in the vehicle, will result in an extended midbass and

upper subbass response. This is a result of these frequencies being below the

lowest resonance in the vehicle (typically around 50-125 Hz in most vehicles,

described in more detail on pages 30 and 31). In more practical terms, install

the Clarus midbass into your vehicle and you will see a dramatic improvement

in midbass and upper subbass output, much more so than just simply listening

to the Clarus in a large room, or worse yet, “free air” (we don’t recommend even

trying the Clarus speakers in “free air” without some form of enclosure or innite

bae for the midbass).

Thiele/Small Parameter Discussion for Clarus Midbass

Speakers

The mechanical and electrical parameters of the Clarus midbass speakers

are amenable to a variety of different installations and speaker locations.

The high Qms (Q factor of mechanical system) and Qts (Q factor of total

system), coupled with the driver’s Fs (resonance frequency) allow it to be

used in an “innite bafe” conguration. In more practical terms, install

the Clarus midbass such that the front and back waves don’t “meet” (as

detailed in Section I – Getting Started - Basic System Installation), including

in a door or kick panel, or in the case of a motorcycle, in the fairing (using

only the airspace behind the speaker as a pseudo enclosure), with no

need for a real enclosure or “box.” The design goes hand in hand with

fool-proof, high-end sound quality with minimal work. For more advanced

users, please reference the Thiele/Small Parameters for the Clarus-series

midbass drivers.

10 11

Clarus C5

Mechanical Drawing

Clarus C6

Mechanical Drawing

12 13

Clarus C2x

Mechanical Drawing

Clarus C1

Mechanical Drawing

(Installed in Flush-Mount Cup)

14 15

Clarus C1

Mechanical Drawing

(Installed in Installed in Angle-Mount Cup)

Clarus C51-2 Frequency Response Graph

Clarus C61-2 Frequency Response Graph

16 17

Unpacking/Inventory

Carefully unpack the Clarus carton, and verify that the

following parts are included in the box (CAUTION: use

care to remove the midbass speakers with two hands,

and avoid pressing your thumb or ngers against

the cone of the midbass – never test the speaker’s

excursion manually with your ngers by pressing the

cone):

• Two Clarus midbass speakers;

• Two Clarus C1 20mm tweeter speakers;

• Two midbass grilles with anodized aluminum

Hybrid Audio Technologies nameplates and ABS grille

mounting anges;

• Four small packages located underneath the

midbass drivers, which contain:

• Hardware needed to install the midbass speakers,

including high-quality black oxide Philips head

screws and black oxide steel “speed clips”; and

• Four small slices of butyl adhesive putty to help

secure the supplied grilles to the ABS grille mounting

anges, if needed.

• Two small packages located underneath the tweeter

drivers, which contain:

• Two angle-mount and two surface-mount xtures

to be used for various tweeter mounting options; and

• Hardware needed to install the tweeter speakers,

including high-quality black oxide Philips head

screws and steel “speed clips.”

Should you be missing parts, please contact your

authorized Hybrid Audio Technologies dealer for

replacement parts, or contact us directly at:

[email protected]

Section I • Getting Started

Basic System Installation

Now that you have unpacked the Clarus box and have veried that all of the parts are

included, it is time to evaluate the vehicle for the impending installation. If you feel the

least bit uncomfortable about the installation, have the Clarus speakers installed by

an authorized Hybrid Audio Technologies dealer. The Clarus speakers are an incredible

high-end speaker system, but will only be as good as the installation; a poor installation can

negatively aect the performance of the Clarus speakers. We can only build great speakers,

but can’t control or account for poor or inadequate installations.

Should you decide that you can handle the installation yourself and feel condent that

the end result will be adequate to reap the performance benets of the Clarus component

system, you will need to have certain hand tools available to you for the installation. These

include, but may not be limited to:

• Cordless drill/driver with a 1/8” drill bit and a Phillips head and a few assorted driver bits

(commonly including Torx driver bits) with an attachment (a hand-operated screw driver

and/or Torx driver will also likely work);

• Certain vehicles may require an assortment of hex-key wrenches to remove the old

speakers and/or panel screws;

• A panel-popping tool (retaining clip removal tool) to remove panels in the vehicle

(such as door panels). In a pinch, a large at-head screwdriver does work, but damage to

panels or retaining clips can result;

• A wire cutter and wire stripper;

• Electrical tape; and

• If you plan to use the vehicle’s existing speaker wire, you will need to know which wire

is positive and which is negative at each proposed speaker location. If you’re unsure, we

highly recommend the use of Installation Excellence, an on-line resource for wire colors,

wire locations, t guides, and technical support.

Continued on following pages...

Clarus

Component

Systems

Using this Manual

As mentioned in the Welcome and

Introduction, this is not your typical

car stereo speaker owner’s manual.

It is a mobile audio reference manual

for not only your impending Clarus

installation, but also to act as a guide

to get the most out of your audio

system. Generally speaking, this

manual is divided into two parts. The

rst part focuses on a typical, basic

installation of the Clarus product, and

follows in general what you’d expect

from a mobile audio component

system owner’s manual. The second

part delves into more advanced topics

on optimized speaker placement,

“lessons learned” (a topical discussion

of real-world applications), use of

sound damping products and acoustic

absorption materials, and ne tuning.

Most users will stop at the conclusion

of the rst section once the basic

installation is complete, and this is

perfectly acceptable. But for those

with an intrinsic desire to learn more

about how to make their mobile

audio systems better, we invite you to

continue reading through the latter

half of the manual as well. Our goal is

to not only build the best-performing

mobile audio systems in the world,

but to also educate consumers and

professional installers alike on how

to achieve reference-grade audio

system playback in the mobile audio

environment.

18 19

Section I • Getting Started

An Important Learning Note

Hybrid Audio Technologies designed the Clarus-series to be congured with the tweeter

relatively close to the midbass, such as within 30cm or so, as we can eectively mitigate

anticipated environmental conditions and reduce the number of variables in this type of

installation. When the tweeter and midbass are placed close to each other, the relative

amplitudes (volumes) of the midbass and tweeter are equalized to each other and the

speaker system will perform as intended. When the tweeter is separated by a far distance

from the midbass, the relative amplitudes will likely need to be equalized. This is due to

simple physics. If the midbass drivers are placed low in the door, for example, and the

tweeter is placed high in the dashboard, sail panels, or a-pillars, there WILL be a notable

amplitude dierence between the two speakers. This is because the midbass are installed

further from you, and are likely aimed into your leg, carpeting, and other soft furnishings in

the vehicle, while the tweeter is located likely closer to you, likely aimed more “on-axis”, and

is near hard, reective surfaces, such as window glass, hard plastic interior panels, and etc.

One of the benets of the Clarus series over its sibling Imagine series is the inclusion of an

outboard crossover system that includes a fairly comprehensive set of attenuation lters

for the tweeter output. Whereas the Imagine systems do not include any form of ltering

to attenuate the tweeter’s relative amplitude with respect to the midbass, the Clarus sets

do come with the feature of a stepped attenuation network to satisfactorily allow for

the end-user to tune and customize the tweeter’s level with respect to the midbass. The

tweeter attenuation network allows for a world of potential new mounting possibilities of

the tweeter location with respect to the midbass location.

Finally, just because there is a factory tweeter pod location in the dashboard, a-pillars, or sail

panels in your vehicle doesn’t mean you have to use it! Because our ears are on the left and

right sides of the human head, human hearing is much less susceptible to hearing height

cues as it is hearing width and depth cues (please reference Lesson 3 and Lesson 4 later in

this manual). Please don’t be fooled into thinking that the tweeters MUST be placed high

in order to establish a good stage height! Alas, as the end-user, it is up to you to take the

time and test the set to see what orientation is to your liking, and certainly, as students of

acoustics, we at Hybrid Audio Technologies encourage that learning exercise.

Section I • Getting Started

Basic System Installation (Continued)

In a basic system, the Clarus midbass speakers were designed to be installed in the original

factory speaker locations, most often in the vehicle’s doors (more advanced locations that

provide an additional level of performance are discussed in Section II of this manual, if

you’re interested in learning more). The Clarus midbass drivers are innite bae-capable

speakers, and must be mounted in a “large enclosure”, or as close to it as possible, with

unrestricted access to airspace to ensure the speaker’s ability to eectively reproduce its

wide frequency bandwidth. The reason why the speaker was designed in this way is highly

empirical. When a speaker is mounted in a small closed box, it radiates as much energy

forward of the cone as it does rearward of the cone. All speaker cones (diaphragms) are a

weak sound barrier at best, and the result of the high amount of energy being “pushed” into

a small enclosure is the energy transmitting through to the outside of the cone (an additive

phenomenon to the incidental wave). Consequently, Hybrid Audio has designed the

Clarus midbass to work well without an enclosure, and as such, should not be signicantly

prone to enclosure back-pressure and sound coloration when placed innitely baed.

The “innitely large” enclosure, such as one might nd in a door panel, improves spectral

response and power response variation between high and low frequencies.

In a basic system, the Clarus tweeters were designed to be installed in factory-supplied

tweeter locations, typically found in the a-pillar, dashboard, sail panel, or door panel. If your

vehicle is older, or did not come with factory tweeter locations, you may need to install

the tweeters in a bit of a custom fashion. Not to fear though – we have included several

dierent options for easily mounting the tweeters, so you can decide which will work the

best for your application. Since the tweeters are a sealed-back design, they can be placed

anywhere without having to provide airspace or any type of enclosure. Hybrid Audio

Technologies highly recommends that the tweeter placement be the subject of your own

experimentation. This can be accomplished by leaving some excess wire length for the

tweeter, and experimenting with dierent potential mounting locations by temporarily

attaching the tweeter using double stick tape, Velcro®, etc.

20 21

DO NOT INSTALL THE SPEAKERS WITH A DRILL OR DRILL-DRIVER, as the drill-driver will put

considerably more torque on the speaker basket than what is required, and can easily damage the

frame of the speaker. The same procedure can be followed for the tweeter installation observing

the precautions mentioned in the midbass installation, above. Once a suitable location is found

for the tweeters, mounting options can be evaluated. The Clarus kit comes standard with three

tweeter mounting options, including a swivel ush-mount cup, a surface-mount cup, and an

angle-mount cup. Decide which mounting strategy works the best for your installation, and

permanently mount the tweeters. Route the wiring from the underside of the tweeter to an

accessible location. At rst, connect the tweeter wire to the 0 dB terminal location on the passive

crossover to the positive terminal (red wire) of the tweeter, and the negative (black wire) from the

TW- terminal on the passive crossover to the tweeter’s negative wire. The wiring is color coded

and the terminals are keyed according to gender, for convenience. The -3 dB, 0 dB, and +3 dB all

reference various output levels for the Clarus tweeter, so you can ne-tune your system’s treble

amplitude (loudness) with that of the midbass drivers.

Once all four speakers are installed, you will need to do a brief listening test with CD-quality music

that you are intimately familiar with to determine if the tweeter attenuation of 0 dB is adequate

for your listening style, type of music you listen to, and the acoustics and speaker locations and

relative intensities of the speakers as they interact with your vehicle. In most systems, the -3 dB or

0 dB setting will be the preferred choice. In certain instances, and for certain owner’s, the +3 dB

setting may be a good option. Be sure that all equalization, bass, and treble levels are defeated or

set to “zero” on the source unit before evaluating the intensity of the tweeters with respect to your

midbass level and your listening taste. Note also, after approximately 10-25 hours of play time, the

speakers will begin to “break in”, like any mechanical component, and intensities may need to be

re-adjusted again following the same procedure. In other words, the midbass need to be broken

in with typical play-time. You may nd that after break-in, the tweeter intensity will need to be

adjusted.

Once levels are set as per the above, the sound damping cropped so as to allow for the re-installa-

tion of door panels and/or interior panels, and all wiring neatly wire-tied away from heat and noise

sources, or from abrasion and areas where the wires may be accidentally sliced or cut, the vehicle

can be re-assembled. Sit back and enjoy the music.

This is the end of Section I: Basic Installation.

If you’re happy with the end product, stop reading here. If you

want to learn more about advanced techniques for achieving great

mobile audio sound quality, ip the page...

Section I • Getting Started

Basic System Installation (Continued)

Once you have determined the mounting locations for the Clarus separates, and have evaluated

the circumstances by which the Clarus speakers will need to be installed, it is time to dismantle

the vehicle to access the old speakers. Most dashboard-mounted speakers are easily accessed by

removing their grilles, which are usually attached to the dashboard with screws or retaining clips.

A-pillars are usually accessed by pulling rmly at a right angle to the panel. Door speakers are

usually easy to access as well, either from the front by prying o the OEM grille, or by physically

removing the entire door panel. In all cases, it may be prudent to reference your vehicle’s factory

service manual. If you don’t have a factory service manual, you can go to the Installation Excellence

website for downloadable resources with respect to not only wiring but disassembly of your

vehicle, and the procedures to access your OEM speakers.

With the OEM speakers removed, we HIGHLY recommend the use of a self-adhesive damping

product, such as brand names Dynamat®, B-Quiet®, RAAMmat®, and others. The reason for the use

of damping material is to quiet buzzes and rattles that will be exposed by the high-performance

Clarus midbass speakers, but more importantly to seal up door accesses and cavities, thereby

creating a pseudo “enclosure” for the Clarus midbass. If the midbass are installed immediately

adjacent to a large access hole or opening in the door panel, there will be an acoustic “short

circuit” (as described later in “Frequency Response”) where the front and back waves of the speaker

meet, and cancellation will occur, seriously aecting midbass output. The use of a good damping

product is the single-biggest installation-related improvement you can do to enhance the

performance of your Clarus audio system. And since the Clarus midbass require an “innite bae”,

it is intuitive to seal up the mounting area as best as possible, such as in the door, allowing the

speaker to “see” a large enclosure in the door cavity, kick panel, dashboard, or wherever you decide

to mount the Clarus midbass.

If you plan to use the OEM speaker wiring, you will likely need to cut o the OEM speaker plug, and

strip back approximately 3/8” (10mm) of insulation to expose the bare wire. It is recommended that

you then install slide-style terminals on the wire, for easy connection to the Clarus midbass.

In a basic installation, the Clarus midbass were designed to install directly into the factory-supplied

speaker baes or speaker openings. The speaker should t snug to the bae without air gaps; do

not force the speaker into a bae that is too small, as this will damage the speakers. If the factory-

supplied mounting bae is too small, refer to Section II for advice on how to build custom baes.

When tightening your speakers to the bae, alternate the tightening of the screws, just as if you

were changing a tire on your vehicle, by alternating in a pattern around the speaker until all screws

are hand-tight.

22 23

Lesson Two: Equalization of Pathlength Dierences

Quite possibly the most important functional consideration that a do-it-yourself enthusiast or professional

installer should give to the Clarus speaker placement is to optimize, as best as possible, pathlength

dierences (PLD’s) in the vehicle. PLD’s are dened mathematically as follows (this example assumes a

right-hand drive vehicle---PLD’s are always a positive number):

X – Y = Z

Where:

X = distance of the center of the left speaker from your left ear.

Y = distance of the center of the right speaker from your right ear.

Z = pathlength dierence.

Applying this formula, assume that the distance of the left speaker from your left ear is 140cm, and the

distance of the right speaker from your right ear is 100cm, the pathlength dierence is 40cm.

Good stereo imaging is completely dependent on arrival times of the fundamental vocal frequencies.

Dierences as little as 10 microseconds can be detected by the brain. A PLD of 30 centimeters equates to

the sound from the nearest channel arriving about 0.9 milliseconds earlier than the furthest channel. It is

Hybrid Audio’s opinion that the end-user should try to keep PLD’s to less than 30 centimeters in a vehicle

which is intended to have good imaging and staging character from both seated positions.

The best way to go about evaluating certain locations in your vehicle is, in general, to look for the potential

locations as far forward and away from you as possible, but still with a general “line of sight” to the speakers

(particularly the speaker on the far side of the vehicle). An easy way to test various potential locations is

to hold a tape measure or other measurement device from the potential speaker mounting locations, and

measure those locations with respect to your ears.

Reference the gure, below. In this scenario, three potential locations for the mounting of the Clarus

midbass driver are shown:

Section II • Moving Forward

Advanced System Installation

The previous section detailed a typical, basic installation of the Clarus product. In this section,

Hybrid Audio Technologies has prepared a more advanced topical discussion of Clarus installation

techniques, concepts, and principals, where a little bit of additional installation work can net

immense gains in overall sound quality.

There are certainly many things you can do to improve your mobile audio system, such as addition

of amplication, a dedicated subwoofer system, higher-gauge speaker wire, and higher-end

passive crossovers, and active crossovers. All of these things require an additional amount of

monetary investment into your audio system, and may not net the immediate gains that other,

more elementary installation items can net. The following discussion is pertinent to easy and

cost-eective enhancements you can do for your audio system, particularly as it relates to the

installation of Clarus component speakers.

In any mobile audio system, the weakest link will always be the speaker systems, followed closely

by installation techniques (sometimes its vice-versa). Since the Clarus component system you have

purchased has solved the rst issue, the second issue, that being installation techniques, can see a

signicant improvement as well by understanding and incorporating some or all of the techniques

in the following sections.

Lessons Learned

We like to call this our “Lessons Learned” section, where we expose some critical lessons that we

have learned through thousands upon thousands of hours of trial and error:

Lesson One: O-Axis Response

When a speaker system like the Clarus is placed in an automotive environment, we hear the

direct (shortest path) and reected (longer path) sounds, such as resonances and reverberations.

The two sounds are processed by the brain as one sound, and this inuences our perception of

height, width, and depth of soundstage, as well as rearward ambience. For this reason, the o-axis

radiation pattern of any speaker in a vehicular environment has a signicant inuence on how

natural the music sounds.

The lesson to learn here is that most mobile audio sound systems benet greatly from having the

front stage speakers at least partially “o-axis.” O-axis means that the speakers are not pointing at

you, but rather at some angle less than 90 degrees away from you.

Figure 1: Potential Locations for Mounting the Clarus Midbass Speakers

24 25

A sound wave approaching the eardrum from your chosen speaker location is shaped by

interactions with the size and shape of your head, torso, and outer ear, resulting in the HRTF.

More specically, the HRTF is the ratio between the sound pressures of the wave at the eardrum,

as compared to the sound pressure that would exist at the center of the head if the head were

removed. In general, the sound arriving at the ear further from the source is attenuated and

delayed relative to the sound arriving at the ear closer to the source. This generates an interaural

intensity dierence (IID) and an interaural time delay (ITD). As a sound approaches the head, the

ratio of distances from the speaker location to the near and far ears increases, and the eects of

head-shadowing are amplied, causing the IID to increase. The spectral shaping caused by the

head and the shape of the outer ear may also change. The ITD, which results from the absolute

dierence in path length from the source to the ears, remains approximately constant as distance

decreases. From this we learn:

• ITD is the dominant factor for frequencies below about 500 Hz;

• A combination of ITD and IID are dominant for frequencies between approximately 500 Hz and

2,000 Hz; and

• IID, in concert with HRTF, are dominant above about 2,000 Hz.

These are generalizations, and are subject to the size and shape of one’s head and torso, and size

and shape of the outer ear (the folds and ridges of the ear), but in general, the above is a good

guideline for establishing ITD, IID and HRTF thresholds for the human auditory system.

Because the Clarus midbass’ ability to play into the sub-200 Hz range, an eect clearly dominated

by ITD, up to and including frequencies exceeding 6,000 Hz, an eect clearly dominated by IID

and HRTF, placement of this driver is extremely important. The driver should be placed as far

forward as possible in the vehicle to optimize ITD. Lateral (forward to back) placement is much

more important than horizontal placement (up and down). This is because of the brain’s ability to

process sounds such as spectral envelope cues, and use a phenomenon known as the “precedence

eect”; the brain can be easily “fooled” into thinking a sound stage is high with kick panel or

oor-mounted speakers (a word to the wise: the best place to put a set of speakers is not always

“up high”, as most vehicles do not oer an amicable location in the dashboard or a-pillars for good

image placement for both seated passengers, especially in the critical frequencies sub-500 Hz).

In addition to the time equalized placement of the drivers, the end-user must also consider that

above approximately 2,000 Hz, intensity plays a key role in good sound staging and imaging.

Therefore, the Clarus midbass’ should be placed in an area where intensity dierences can be

equalized, either mechanically or electronically, to ensure good imaging and sound staging.

The lesson to be learned is that, like Lesson Two, the Clarus midbass should be placed as far

forward from your listening position as possible, and every eort should be made to optimize time

and intensity domain characteristics of the installation.

Section II • Moving Forward

Lesson Two: Equalization of Pathlength Dierences (Continued)

In scenario “a”, we show the installation of the Clarus midbass in the dashboard, high in a door

panel, or in the a-pillar. As you can see from the diagram, the PLD’s between the left and right

speakers are large, due to the proximity of the listener to the near-side speaker. While the

mounting of primary drivers in the dashboard or a-pillars has become increasingly popular, this

conguration will undoubtedly require both time and intensity domain equalization in most

vehicles to ensure a good, focused center image, properly located in the center of the vehicle for

one seated position. There are, however, some rare exceptions, and you may actually nd that the

dashboard locations provide the best equalized PLD of the available mounting locations; this is

very rare though – in our experience, less than one percent of vehicles on the market today have

optimized dashboard speaker locations for the midbass drivers.

In scenario “b”, a typical door installation location is shown, and in many vehicles represents a

good improvement in PLD’s from the dashboard, high in the door panel, and a-pillar location

identied in scenario “a.” The door speaker installation scenario is the one detailed in the basic

installation section at the beginning of this manual, and in most vehicles represents a satisfactory

location to mount speakers; not ideal but satisfactory. The door speaker installation scenario will

likely also require some amount of time and intensity equalization to ensure a centered image in

most vehicles; this can be as simple as adjusting the balance control on your source unit, to more

advanced ways of digital time and intensity manipulation.

The third and nal potential mounting location as shown in this diagram (scenario “c”) represents

a kick panel installation, where the midbass are placed far forward in the A-frame cavity of the

kick panels, present in most vehicles. The kick panels are the small panel next to the throttle and

brake pedals, down by your feet. While it is not immediately obvious looking at a two-dimensional

drawing, in many cases the kick panel location aords the best equalization of pathlength

dierences for most vehicles. And the reason why this is a good choice for most vehicles is dened

in the second full paragraph of Lesson Three, below.

The lesson to be learned here is that by taking a few moments to evaluate the potential mounting

locations in your vehicle, in a very short period of time, you will be able to nd the best location for

your Clarus midbass by determining the location with the smallest PLD.

Lesson Three: The Eect of HRTF, ITD, and IID

Head-related transfer function (HRTF), interaural intensity dierences (IID), and interaural time

delay (ITD) all play a key role in the optimum placement location for the Clarus component

speakers.

26 27

no sonic benet to your Clarus installation. The Clarus drivers are long-throw midbass, and the

plastic mounting baes that come from the factory in virtually every vehicle will lead to buzzes,

rattles, vibrations, and resonances, all of which negatively aect the Clarus installation. In other

vehicles, you may have attached the Clarus midbass’ directly to the door metal (hopefully with

a layer or two of self-adhesive sound damping in between), but this is still not entirely ideal. In

whatever scenario you have installed your Clarus midbass, there are certain “tricks” and techniques

that may be applied to get the most out of your Clarus component set, specically the midbass

installation, as follows:

Mounting the bae, sound damping, and “decoupling”

The mounting bae or mounting location should either be secured extremely well to the vehicle’s

body, or completely isolated from the vehicle’s chassis. The reasoning is that the speaker bae

panel will vibrate and will radiate sound. Even small vibrations can result in the bae itself

radiating more sound than the actual speaker at certain frequencies. The mounting bae or

mounting location should be damped with a layer of typical sound damping to reduce the Q of

the bae and lower its vibration resonance frequency below the range of the driver’s frequency

response. In many cases, using thicker bae panel in concert with self-adhesive sound damping

can also be advantageous, provided the rearward wave of the speaker has no obstructions created

by the bae itself. Finally, if possible, the speaker should be mechanically decoupled from the

bae. This can be something as simple as a layer of self-adhesive foam tape, to more exotic

examples of decoupling, including rubberized rings or multiple-layer septum shielding.

Building solid mounting baes

In many cases, it is advisable to mount your Clarus midbass’ in high-stiness wood or high-density

berglass (or wood treated with berglass resin). Hybrid Audio Technologies recommends the

use of a solid hardwood, such as birch or oak, namely because these woods are sti and help to

dissipate resonance, and screws can be inserted and removed multiple times without stripping.

Avoid Medium Density Fiberboard (MDF), particularly in wet environments like the door, as the

MDF will act like a sponge with humidity and moisture, and not only that, the MDF is a dense, but

not sti type of wood, and the results may not be particularly noticeable if you use MDF. Once your

bae is built, it must be covered in one or two layers of a good-quality, brand name self-adhesive

damping product; a solid wood mounting bae with sound damping treatment will augment the

Clarus installation by eliminating resonances.

Section II • Moving Forward

Lesson Four: Point-Sourcing

The term “point-sourcing” is often used to describe the technique of having a single pair of

speakers in an installation cover the majority of the critical middle band frequencies. In many

installation scenarios, the Clarus midbass could be considered a point-source speaker driver,

because it has the ability to reproduce six octaves of tones. Point-sourcing, if done correctly, can

lend itself to a variety of valuable attributes, including precise image denition and stable sound

staging character. By applying Lessons 1-3 above, the Clarus midbass can be used as a point-source

driver to achieve excellent staging and imaging results.

The lesson to be learned here is that the Clarus midbass, given its wide-bandwidth design, can

faithfully reproduce as much as six octaves of tones, and would make a valuable addition to any

sound system as a point-source driver for the spectrum comprising vocal imaging cues.

Lesson Five: Reference

One of the most important things to do before completing your Clarus installation is to get a

reference for your future listening tests. To really know what a snare drum sounds like, you must go

and listen to one, in person, live and un-amplied. There is no substitute for the visceral impact and

emotion of live music. Nothing else in life can touch your soul the way music does. Whether it’s a

200-member orchestra, or a four-piece fusion band, nothing compares to the phenomenon of live

music.

Take this as Hybrid Audio’s ocial request: become a student of music and your mobile audio

sound system will be better for it. We want nothing more than to know there are great sounding

audio systems around the world using our products, and you’d make us all very proud if you

became a student of music and learned its beauty and passion.

Advanced Installation of the Clarus Component

Systems

Mounting Bae Considerations

Now that we have revealed ve of our most important “Lessons Learned”, we can now apply these

lessons to the Clarus installation. The rst important matter is the physical installation of your

Clarus midbass, and more specically with respect to improving the Clarus midbass’ mounting

baes. Most vehicles’ factory mounting locations for speakers are less than ideal. In most cases, the

OEM speaker mounting anges are likely nothing more than imsy extruded plastic, and provide

28 29

The rst principle to understand is that below 200 Hz, acoustic treatments are rendered virtually

useless. It is Hybrid Audio’s assertion that only those frequencies above 200 Hz benet from the

use of treatments, given that a 200 Hz waveform is about 1.7 m long; 1.7 meters is less than or

equal to most vehicle widths. This is also the frequency where we believe pure tones in the vehicle

are going to be dicult, if not impossible to localize. Finally, most vehicles exhibit a Schroeder

Frequency (Fs) between 50 at 125 Hz; the Fs (or cabin-gain frequency) is vehicle dependent, and

is the frequency at which resonances become so tightly packed in frequency and space that the

acoustical properties of the vehicle behave quite uniformly. (As an aside, one signicant benet

of car audio sound systems is that frequencies below the lowest room resonance increase at a

theoretical 12 dB/octave…it’s no wonder car audio systems have such great bass!)

Acoustic treatment can be very eective above 200 Hz, depending mostly on the polar radiation

pattern of the speaker. In the case of the Clarus midbass, the polar radiation pattern is quite large

at lower frequencies, with a narrowing of the radiation pattern (“beaming”) at frequencies into the

treble bandwidth.

Should the Clarus midbass be placed in the kick panel locations, one may nd that a notable

improvement can be made by adding acoustical treatments, such as open-cell foam, into the

underside of the dashboard. Likewise, should the midbass, or in fact the C1 tweeter be placed up

high on a-pillars, or in the dashboard, where comb ltering (reective summation and cancellation

o of a hard surface, such as a windscreen) may become an issue, a dashboard “mat” or other soft

furnishing may be a noticeable improvement. It will require trial and error to get it right, but the

learning is in the experimentation!

Advanced Installation Conclusions

Sadly, there are no rules in mobile audio, only several hypothesis and theorems that seem to work

for most vehicles. Your vehicle may be dierent, and defy everything we know, and everything

written in this manual. You may nd that getting that rich, detailed sound that you crave may

require some experimentation and a lot of work to make it right. Or you might be fortunate to have

a vehicle that sounds excellent with minimal work. Have patience and work through the issues;

the result will be a rewarding musical experience in your vehicle! Just remember, it is critical to get

a reference, as detailed in Lesson 5. Go out and become a student of music and audio, learn, and

improve your audio system one step at a time. The journey is exciting and rewarding!

What we have included above is only a very brief primer to the world of high-end mobile audio

systems. We invite you to read more by going to our downloads page at hybrid-audio.com.

Section II • Moving Forward

Advanced Installation of the Clarus Component

Systems (Continued)

Mounting bae dimensions

While building baes is important, it is notable that mounting bae size is equally important.

All mounting baes should be kept as small as possible with respect to the size of the speaker.

The purpose of using a small bae is to avoid the potential for low amplitude diracted sound

waves becoming summed with the incidental waves. A narrower bae also becomes increasingly

important as frequencies range into the Clarus midbass’ upper bandwidth, where the power

response is more uniform and incident and reected waves are indistinguishable. In practical

terms, keep bae dimensions small with respect to the size of the Clarus midbass, chamfer or

round sharp edges (including, in particular, the mounting hole’s rear inner edge), ush-mount

the speaker whenever possible, and use shallow, surface-mounted hardware. Also, remove all

unnecessary protrusions from the bae surface.

Acoustic Treatment

A considerable benet can be made to any mobile audio system with the select placement of

acoustic treatments. The purpose of using acoustic treatments is to reduce the amount of reected

energy in the hostile automotive environment, and hear more of the direct sound being emanated

from the speaker. It is akin to the signal to noise (S/N) ratio in a piece of electronics, where the

signal could be considered the direct energy coming from the speaker, and the noise could be

considered the reected waves o of nearby surfaces, such as windows, hard center consoles and

door panels, windscreens, and etc. A word of warning though: there is a ne line between too little

and too much acoustic treatment; just as some vehicles can benet from some selectively applied

treatments, there is a point where the vehicle can begin to approach “semi-anechoic” conditions,

and lose its liveliness, which is not ideal. Reections are all around us, and are a part of our

day-to-day lives. It is our opinion that some lateral reection is a good thing; it helps to establish

stage boundaries, and gives the recoded playback and more visceral and “believable” sound.

30 31

Hybrid Audio Technologies extends a limited

one year warranty to the original purchaser

when self-installed, and three years warranty

when installed by a certied Hybrid Audio

Technologies dealer (United States only),

and hereby certies that this product

will be free from defects in materials and

workmanship under normal and proper use

for one year from the date of purchase.

Hybrid Audio Technologies’ responsibility

under this warranty is limited to replacing

or repairing, at Hybrid Audio Technologies’

option, products or parts determined by

Hybrid Audio Technologies to be defective

either in materials, or workmanship. To

attain warranty service, the customer

must deliver the product or the defective

part(s), appropriately packed with proof

of purchase date, to an authorized Hybrid

Audio Technologies dealer. In the event that

a direct return from a consumer is required,

the consumer must obtain from Hybrid

Audio Technologies a return authorization

number, and ship the defective product

directly to Hybrid Audio Technologies.

All shipping expenses are the customer’s

responsibility. If the product has been

updated or superseded, a replacement

will be made with a current model of the

same quality and function. Warranty of

the replacement parts is limited to 90 days

or the unexpired portion of the warranty

period of the product on which the parts are

being used, whichever is longer.

This warranty does not cover any defects or

costs caused by: (1) modication, alteration,

repair or service of this product by any

persons or company other than Hybrid

Audio Technologies; (2) physical abuse to,

overload of, or misuse of, the product or

operation thereof in a manner inconsistent

with the use indicated in the instructions; (3)

any use of the product other than that for

which it was intended; or (4) shipment of the

product to Hybrid Audio Technologies for

service. This warranty does not cover labor

costs.

Hybrid Audio Technologies is not liable

for any special incidental or consequential

damages, including, but not limited to,

personal injury, property damage, damage

to or loss of equipment, loss of prots

or revenue, costs of renting or buying

replacements and/or any other additional

expenses, even if Hybrid Audio Technologies

has been informed of the prospect of

such damages. Any express warranty not

provided herein, and any remedy which

other than the warranty contained herein

might arise by inference or operation of law,

is hereby excluded and disclaimed including

the implied warranties of merchantability

and of the tness for a particular purpose.

Clarus

Component

Systems

Warranty

Thank You!

Hybrid Audio Technologies is

delighted that you have chosen

a Clarus Component System

for your high-end mobile audio

sound system. We are convinced

that a great product oering,

backed up with unsurpassed

customer service and technical

support will advance the Hybrid

Audio Technologies namesake in

the coming years. We are pleased

that you have joined us in our

“new generation of in-car audio.”

If there is anything we can do

to help you get the most out of

your Clarus installation, please

do not hesitate to email us:

[email protected],

by phone: 770.888.8200, or by

visiting us at: hybrid-audio.com

32 33

1240 Oak Industrial Lane

Cumming Georgia 30041

United States

(T) +1 770 888 8200

(F) +1 888 886 4605

hybrid-audio.com

Hybrid Audio Technologies Clarus C61-2 Installation & Reference Manual

Brand: Hybrid Audio Technologies

Model: Clarus C61-2

Category: Car speakers

Type: Installation & Reference Manual

This manual is also suitable for

Clarus C6

Download PDF

report

Hybrid Audio Technologies Clarus C61-2 Installation & Reference Manual

This manual is also suitable for

Hybrid Audio Technologies Clarus C61-2 Installation & Reference Manual

Related papers

Other documents